Scheduling on a cell from different cells

Abstract

Methods and apparatuses for scheduling on a cell from different cells. A method for operating a UE includes receiving first information for first and second scheduling cells of a scheduled cell and second information for receptions of physical downlink control channels (PDCCHs) from the first and second scheduling cells. The PDCCHs provide downlink control information (DCI) formats. The DCI formats schedule physical uplink shared channel (PUSCH) transmissions, or physical downlink shared channel (PDSCH) receptions, on the scheduled cell. The method further includes determining whether to receive the PDCCHs either only from the first scheduling cell or only from the second scheduling cell within a time unit based on the second information and receiving the PDCCHs either only from the first scheduling cell or only from the second scheduling cell within the time unit.

What is claimed is: 
     
       1. A method performed by a user equipment (UE) in a communication system, the method comprising:
 identifying a primary cell with a first subcarrier spacing (SCS) configuration μ p  and a secondary cell with a second SCS configuration μ s , wherein the primary cell is scheduled from the primary cell and the secondary cell; 
 identifying whether the first SCS configuration μ p  and the second SCS configuration μ s  are the same; and 
 monitoring a physical downlink control channel (PDCCH) on the primary cell and the secondary cell based on the identification of whether the first SCS configuration μ p  and the second SCS configuration μ s  are the same, 
 wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are the same as a SCS configuration μ 1 , a total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the SCS configuration μ 1  is identified by including the primary cell once in N cells,0   DL,μ  downlink cells associated with the SCS configuration μ 1 , 
 wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are not the same, a first total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the first SCS configuration μ p  and a second total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the second SCS configuration μ s  are identified by including the primary cell only in N cells,0   DL,μ  downlink cells associated with the first SCS configuration μ p . 
 
     
     
       2. The method of  claim 1 , wherein the first SCS configuration μ p  is smaller than the second SCS configuration μ s . 
     
     
       3. The method of  claim 1 , wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are not the same, a first total number of non-overlapped control channel elements (CCEs) C PDCCH   total,slot,μ  associated with the first SCS configuration μ p  and a second total number of non-overlapped CCES C PDCCH   total,slot,μ  associated with the second SCS configuration μ s  are identified by including the primary cell only in N cells,0   DL,μ  downlink cells associated with the first SCS configuration μ p . 
     
     
       4. The method of  claim 3 , wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are the same as a SCS configuration μ 1 , a total number of CCEs C PDCCH   total,slot,μ  associated with the SCS configuration μ 1  is identified by including the primary cell once in N cells,0   DL,μ  downlink cells associated with the SCS configuration μ 1 . 
     
     
       5. The method of  claim 1 , wherein, for all control resource sets (CORESETs) on all downlink bandwidth parts (DL BWPs) of each scheduling cell from the downlink cells associated with the first SCS configuration μ p , CORESETPoolIndex not provided or CORESETPoolIndex is provided with a single value. 
     
     
       6. A user equipment (UE) in a communication system, the UE comprising:
 a transceiver; and 
 a processor operably coupled with the transceiver, the processor configured to:
 identify a primary cell with a first subcarrier spacing (SCS) configuration μ p , and a secondary cell with a second SCS configuration μ s , wherein the primary cell is scheduled from the primary cell and the secondary cell, 
 identify whether the first SCS configuration μ p  and the second SCS configuration μ s  are the same, and 
 monitor a physical downlink control channel (PDCCH) on the primary cell and the secondary cell based on the identification of whether the first SCS configuration μ p  and the second SCS configuration μ s  are the same, 
 
 wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are the same as a SCS configuration μ 1 , a total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the SCS configuration μ 1  is identified by including the primary cell once in N cells,0   DL,μ  downlink cells associated with the SCS configuration μ 1 , 
 wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are not the same, a first total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the first SCS configuration μ p  and a second total number of PDCCH candidates M PDCCH   total,slot,μ  associated with the second SCS configuration μ s  are identified by including the primary cell only in N cells,0   DL,μ  downlink cells associated with the first SCS configuration μ p . 
 
     
     
       7. The UE of  claim 6 , wherein the first SCS configuration μ p  is smaller than the second SCS configuration μ s . 
     
     
       8. The UE of  claim 6 , wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are not the same, a first total number of non-overlapped control channel elements (CCEs) C PDCCH   total,slot,μ  associated with the first SCS configuration μ p  and the second total number of non-overlapped CCEs C PDCCH   total,slot,μ  associated with the second SCS configuration μ s  are identified by including the primary cell only in N cells,0   DL,μ  downlink cells associated with the first SCS configuration μ p . 
     
     
       9. The UE of  claim 8 , wherein, in case that the first SCS configuration μ p  and the second SCS configuration μ s  are the same as a SCS configuration μ 1 , a total number of CCES C PDCCH   total,slot,μ  associated with the SCS configuration μ 1  is identified by including the primary cell once in N cells,0   DL,μ  downlink cells associated with the SCS configuration μ 1 . 
     
     
       10. The UE of  claim 6 , wherein, for all control resource sets (CORESETs) on all downlink bandwidth parts (DL BWPs) of each scheduling cell from the downlink cells associated with the first SCS configuration μ p , CORESETPoolIndex not provided or CORESETPoolIndex is provided with a single value.